Python Django—；Can'；无法获取要加载的静态CSS文件

我试图在index.html中链接的内容

<link rel="stylesheet" href="{% static 'assets/css/main.css' %}"/>

设置.py

STATIC_URL = 'signup/static/'

STATICFILES_DIRS = [
    os.path.join(BASE_DIR, 'static'),
]

错误：

[29/Feb/2020 17:19:31] "POST /postsign/ HTTP/1.1" 200 3445
Not Found: /postsign/signup/static/assets/css/main.css

我不明白那是从哪里来的

my URL.py如下所示：

signup/static/assets/css/main.css

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', views.signIn),
    path('postsign/', views.postsign),
    path('logout/', views.logout, name="log"),
    path('signup/', views.signUp, name="signup"),
    path('postsignup/', views.postsignup, name="postsignup"),
    path('profile/', views.profile, name="prof"),
]

后期设计方法为：

def postsign(request):
    email = request.POST.get('Email')
    passw = request.POST.get("Password")
    try:
        user = authe.sign_in_with_email_and_password(email, passw)
    except:
        message = "Invalid Username or Password"
        return render(request, "signin.html", {"messg": message})
    print(user['idToken'])
    session_id = user['idToken']
    request.session['uid'] = str(session_id)
    return render(request, "index.html")

---

Django 3.0.3版如果有帮助，请将以下内容添加到

URL模式中

from django.conf.urls.static import static

urlpatterns = [
...
] + static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)`

将前导斜杠添加到
静态URL
以避免静态URL是相对的：

STATIC_URL = '/signup/static/'

你的注册/静态/位置在哪里？你使用的django版本是什么？不，同样的错误。如果有帮助的话，我正在使用Django3.0.3